API Pressure seal gate valves are used for high pressure service, typically for pressures above 100 bar. The unique feature of the pressure seal bonnet is that the body-bonnet joints seal improves as the internal pressure within the valve increases


1.Valves in intermediate classes reduce total cost of ownership
2.Pressure-Seal mechanism utilizes line pressure to enhance seal; ensures sealing integrity at higher operating pressures.
3.In-situ hardfaced seat design for all sizes
4.Higher hardfacing thickness (3 mm) to ensure consistent hot hardness
5.Body-guided Disc offered in Pressure-seal Globe Valves (all sizes/classes) provides disc stability and avoids vibration of the disc-disc nut assembly
6.Disc guides hardfaced for longer life


Size: 2″-42″
Pressure: 150 – 2500LB
Material: A105N, A350 LF2, A182 F316 or other alloys
Design and production standard: API 6D, API 608, ASME B16.34
Distance between flanges: API 6D, ASME B 16.10
Flange connection: ANSI B16.5
Test standard: API 598, API 6D
Structure: three parts
Actuation: can operate with lever, reducer, pneumatic or electric actuator with handwheel for emergencies
Medium: the valve is suitable for several media including water, steam, oil, gas, petrol products, nitric acid, acetic acid, etc.
Working temperature: from -196ºC (cryogenics service), -46ºC or -50ºC (stainless steel constructions) and -29ºC (carbon steel constructions) up to 220℃

Need more information?